Jeweler Harry Winston donated the famous Hope Diamond—the largest-known deep blue diamond in the world—to the Smithsonian Institution in 1958. It arrived in a plain brown package by registered mail, ...
A pair of diamonds that formed hundreds of kilometers deep in Earth’s malleable mantle both contain specks of materials that form in completely opposing chemical environments—a combination so unusual ...
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For people who want to get married, the diamond engagement ring is a tale as old as time—and advertisers ...
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